The distributive property is
a(b+c)=ab+ac
you have 6(45)
I guess what is means is to write this in ab+ac form...
so first rewrite 45 as a sum (try to look at your choices for a hint in to what sum you are to write it as)

well you can use the distributive property to answer this
the choices are in this form ab+ac
except only choices that have this form are A,B, and C.
Now I'm not saying all of these will work. I'm just saying they all have the form ab+ac form.
ab+ac can be written as a(b+c)
so you have 6(45)
The trick is to rewrite 45 as a sum or a difference using the numbers in the choices that do work.
Then use distributive property once you have written 45 as a sum and/or difference.